Most of the time (or all the time) i'm trying to buy stuff from the market it says "broken item" and some numbers. What's wrong? Can i fix it?

You can do nothing about it itself, but you can Contact KiTFoX or another smod(blue name guys) about it. Or better try contacting a member of the market squad(green name dudes) since they have market in their groupname they maybe can do something about it. <.<

In what shop are you trying to buy?

Radioactive blood from Yumchin's Sales! And Crimson ghost from Cheap Items.

its a big problem... Im not playing until its fixed

and search, before posting threads like this. its a common issue.

I've had that problem and contacted the shop owners, they have all told me they no longer have the items. It gives me the impression that the items were removed from their inventory and not from the Market.

GOTH, the Market isn't perfect yet, it is still being worked on. No reason not to play.

Post the link of the shop here, skulfuk will probably take care of it.

Broken items occur when the shop owner somehow mangages to transfer items without removing them from his shop, therefore leaving just the "buy item" link but with no actual item to transfer.

It's not a problem, this been going on for a while.

Just go to the next cheapest shop.