Can't use market to sell cards... what to do?

Here

buy a cheap game and sell your cards

I have a trick for you,buy some cheap game for a few cents or dlc for a game you own and then sell the cards.

You are crap out of luck for selling them yourself now. Simple as that.

You won't be able to sell.

Trade or craft the badge, or simply let those cards expire.

tf2outpost.com is (obviously) primarily a tf2 trading site, but it has all forms of steam trading, a huge user base, and a much better design than steamtrades. List your globes there (or search for people buying them, but you will get a worse deal) and you can get some tf2 metal for them (or some other cards that won't expire).
Also I see you have a Bounty Hat sitting in your inventory, you could get multiple tf2 keys for that thing. Launch tf2 to get your free stocking of gifts, and it will contain a "giftapult" you can use as gift wrap (just make sure not to "use" it and catapult the gift to a random person)

This is what you get for not supporting the gaming industry.

Yeah you're crap outta luck with the Steam Market, you're locked out for 30 days or whatever no matter what.

Kinda shitty that they don't tell you that beforehand when you haven't purchased anything in a long while and/or you change your payment method, but what are you going to do.

Deal with the pain of being unable to do anything.

Trade them or craft the badge. You have no other choice.

Thank you guys for your answers, it seems that there is no ideal solution! I'll try to give/sell them at low price at the end of the sale. Cheers everyone :)

Trade your cards for normal cards to sell when you're able to use the market. Or for keys, then trade your keys for gift copies of games.

trade

Contact your nearest time machine rental service, go back 31 day ago, buy 3000 copies of Fortix, create 3000 month long Fortix giveaways, return to our time, send the gift, enjoy your regained ability to sell cards. PROBLEM FUCKING SOLVED.