Seriously? $500 minimum? Are you expecting to find some deep pockets that don't know how to use a bitcoin mixer to launder their money? Do you accept forum escrow? Never used Localbitcoins escrow before.
i only work with localbitcoins and paxful.
its easy to use it just need to charge your wallet with bitcoin and open a trade on my link.
after you open it we have a chat, i give you the card, redeem it (means use it where do you want) after release the escrow (you have a button).