How much would be KOF '96, '97 and '98 art kits worth?

I have a chance to get these from !arcade!, how much should I pay for them?

Thanks in advance...

for a full set of english '96 graphics 15-20$
I payed 15$ for an english set without the stickers
15$ for any other KOF besides '94- I payed about 20$ for both english and JPN set with stickers. The stickers were the expensive part

If any set were complete with a box I think 25$ would be fair cuz a box and cart with non matching serials are not highly collectable

Thanks!