With all due respect, $550 is way too high for those domains & sites.
The domains are worth the reg fee, and the sites aren’t really worth anything.
Also, poker.bonusangel.com and bingo.bonusangel.com are both 301’ed to freeplaypromo.com, so they’re not indexed at all. Lying to potential buyers really isn’t a great way to make a sale.
I’ll give you $50.