Conditional Formatting with multiple criteria for first instance only

[Cynthtmr]

I'm making a worksheet to show pricing for elements of custom packages.

I have the actual formula for the pricing worked out;

Cell M11:
=IF($K11=1,INDEX($F$5:$F$25,MATCH(1,("x"=$B$5:$B$25)*($I11=$E$5:$E$25),0)),IF($K11>1,MAX(IF(($B$5:$B$25="x")*($E$5:$E$25=$I11),$F$5:$F$25))+10*($K11-1),0))

But I also need to use conditional formatting to show which price is being selected for every part of the package.

First I choose what's included in the package by entering "x" (column B)
If the selections have different methods (column E), then the highest price for that method is charged.
Every subsequent same method is charged +$10 (the formula above is doing this)

For the conditional formatting, I have this formula so far;
=AND($B5="x",$E5=$I$8,$F5=$L$8)

I have this condition entered for each method with $I$8 and $L$8 changed to correspond to the different methods and the highest price of each method.

How do I make it so that only the first instance of a specific combination of criteria is highlighted?

For example cells F7 and F8 have met all the criteria ("x" entered in B, same method in E, match the highest price) but I need the first instance of $29 (Cell F7) to be highlighted, and any secondary instances to highlight the $10 cell instead (cell G8)
Same goes for cells F16 and F18. They're both "x", and both the same method, and same price, but I need the first instance to highlight the "$25", and the second instance to highlight the "$10"

I'm just stuck and appreciate any help given! Thanks!

 

[Cynthtmr]

Mini Sheet

Tissue worksheet.xlsx.xlsm
	A	B	C		E	F	G	H	I	J	K	L	M	N	O	P
1	Package Worksheet												PriceList
2
3
4			Name		Method	Price	Add-on Price
5			Al tot		B4.20	$29	$10			Custom Price Method Adjusted:			$95.00
6		x	Ash		0	$21	$10
7		x	B tot		B4.20	$29	$10		Methods	Total	Selected	Highest $
8		x	Ca tot		B4.20	$29	$10		0	1	1	21	$21		- First analysis of every method is charged highest pricelist
9			Cl ext		B3.10	$29	$10		B1.10	1	0	0	$0		- Secondary analyses of every method is charged +$10
10			Cu tot		B4.20	$29	$10		B2.20	1	0	0	$0
11			Fe tot		B4.20	$29	$10		B3.10	4	2	25	$35
12			Mg tot		B4.20	$29	$10		B3.40	1	0	0	$0
13			Mn tot		B4.20	$29	$10		B4.20	13	2	29	$39
14			Moist		B1.10	$19	$10
15			Mo tot		B4.20	$29	$10
16		x	NO3-N ext		B3.10	$25	$10		0	B1.10	B2.20	B3.10	B3.40	B4.20
17			Total N		B2.20	$25	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
18		x	PO4-P ext		B3.10	$25	$10		TRUE	FALSE	FALSE	FALSE	FALSE	FALSE
19			P tot		B4.20	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	TRUE
20			K ext		B3.10	$26	$10		FALSE	FALSE	FALSE	FALSE	FALSE	TRUE
21			K tot		B4.20	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
22			Na tot		B4.20	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
23			S tot		B4.20	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
24			S ext		B3.40	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
25			Zn tot		B4.20	$29	$10		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
26									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
27									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
28									FALSE	FALSE	FALSE	TRUE	FALSE	FALSE
29									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
30									FALSE	FALSE	FALSE	TRUE	FALSE	FALSE
31									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
32									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
33									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
34									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
35									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
36									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
37									FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
38
39
Custom

Cell Formulas
Range	Formula
E5:E25	E5	=VLOOKUP($D5,INDIRECT($M$1&"!$B$7:$G417"),5,FALSE)
F5:F25	F5	=VLOOKUP($D5,INDIRECT($M$1&"!$B$7:$G417"),6,FALSE)
M5	M5	=SUM(M8:M13)
I8:I13	I8	=SORT(UNIQUE(E5:E25,FALSE,FALSE))
J8:J13	J8	=COUNTIF($E$5:$E$25,$I8)
K8:K13	K8	=COUNTIFS($B$5:$B$25,"x",$E$5:$E$25,$I8)
L8:L13	L8	=MAX(IF(($B$5:$B$25="x")*($E$5:$E$25=$I8),$F$5:$F$25,))
M8:M13	M8	=IF($K8=1,INDEX($F$5:$F$25,MATCH(1,("x"=$B$5:$B$25)*($I8=$E$5:$E$25),0)),IF($K8>1,MAX(IF(($B$5:$B$25="x")*($E$5:$E$25=$I8),$F$5:$F$25))+10*($K8-1),0))
I17:I37	I17	=AND($B5="x",$E5=$I$8,$F5=$L$8)
J17:J37	J17	=AND($B5="x",$E5=$I$9,$F5=$L$9)
K17:K37	K17	=AND($B5="x",$E5=$I$10,$F5=$L$10)
L17:L37	L17	=AND($B5="x",$E5=$I$11,$F5=$L$11)
M17:M37	M17	=AND($B5="x",$E5=$I$12,$F5=$L$12)
N17:N37	N17	=AND($B5="x",$E5=$I$13,$F5=$L$13)
Dynamic array formulas.

Cells with Conditional Formatting
Cell	Condition		Cell Format	Stop If True
F5:F25	Expression	=AND($B5="x",$E5=$I$8,$F5=$L$8)	text	NO
F5:F25	Expression	=AND($B5="x",$E5=$I$13,$F5=$L$13)	text	NO
F5:F25	Expression	=AND($B5="x",$E5=$I$11,$F5=$L$11)	text	NO
C5:E25	Expression	=IF($B5="x",TRUE,FALSE)	text	NO
C6:E25	Expression	=IF($B6="x",TRUE,FALSE)	text	NO

Cells with Data Validation
Cell	Allow	Criteria
B5:B25	List	x