When listing Amazon items with Hydra and having Hydra automatically export your items to skugrid, you can have them set to whichever pricing model suits your needs. Go to Global Settings and set the Amazon Pricing Option how you want it and it will apply to all listings that are listed with Hydra going forward.
Lowest fulfilled = shipped & sold by amazon or shipped by company x and fulfilled by amazon -- excludes Prime Member Only Deals and 3rd party merchants (enter #skuopt:fulfilled at the end of url when listing with hydra)
Lowest New = Lowest Priced seller of the item in new condition - can be amazon fulfilled or 3rd party merchant (enter #skuopt:lowestnew at the end of url when listing with hydra)
Buy Box = whoever is in the buy box at the time - can be amazon fulfilled or 3rd party merchant (enter #skuopt:buybox at the end of url when listing with hydra)
Lowest Used = Lowest Priced Seller of the item in used condition - can be amazon fulfilled or 3rd party merchant (enter #skuopt:lowestused at the end of url when listing with hydra)
Lowest Overall = lowest priced seller of the item in any condition (new or used) can also be amazon fulfilled or 3rd party merchant (enter #skuopt:lowestoverall at the end of url when listing with hydra)
Prime Exclusive Only = special deals and pricing for prime members only (amazon will have a blue banner on the product page showing that the pricing is for prime members only) (enter #skuopt:exclusive at the end of url when listing with hydra)
Lowest Prime Seller = Lowest seller on the item that displays the "prime logo". Amazon now gives ability for some 3rd party merchants to display the prime logo if they meet certain shipping speeds and performance metrics. So this option allows both Lowest Fulfilled and 3rd Party Merchant -- whoever is cheapest and displays prime logo.