Finding and subtracting with almost similar product SKUs

Hi all.......New to the forums....

This task has me a bit stumped, as I'm not yet fluent in formulas. Basically, I have a large column list with product SKUs. The example shows that pairs of SKUs are similar, but one has additional characters for a special version of the product and is more expensive. I'm trying to come up with a formula that finds the higher item (500FBCLIKA-BOD), get the price, and then subtract the price of the similar, lower value SKU (500FBCLIKA).

	A	B	C
1	SKU	Price	Difference
2	500FBCLIKA	383
3	500FBCLIKA-BOD	495

All I could come up with is:

=VLOOKUP(A2&"-BOD",$A$2:$A$1898,2,FALSE)-A2

Which of course does not work.

Any of you Spreadsheet Wizards know what I should be correcting or using?

Thanks!