The reason the market value has tanked is one, there are a LOT of BP breeders and two, albinos are a commonly bred morph. It boils down to do breeders want to sit on stock which costs money every day it isnt selling as well as shrinking any kind of profit or do they just want to sell them for a reduced price. Look at pied BPs. They used to be $10000. Now they are around $1500 or so for breeder size females. It's just the way business is. More of a product, the cheaper they become as it becomes a buyers market and they more or less set the prices.
I'd guess $200 is fairly reasonable for the snake alone as it sounds like a single gene albino. Not sure how much other stuff you have. Heck i picked up Dottie my female pied for $200 as a baby.
Heck i just looked on Garrick DeMeyers site and he is selling some 2 gene albinos for just over $200.......so $200 for a single gene albino might even be a bit high lol. I'f probably take the $300 the guy is offering lol.