I agree with the fridge, not knowing what you would get, and the germination inhibitors; I also don't really see where that is much easier than just sowing some seeds in the pot...
IMO, better to take the extra tomatoes that are going to get too ripe before you can use them and put them in the freezer, in a freezer bag. Or make some stewed tomatoes. Or share them with a neighbor.
If the cost of seeds is a real issue, buy a packet of an open-pollinated type (or join a seed swap) this year, grow the plants, save some of your own seeds to grow next year -- and repeat.
I love Pinterest, but a lot of the gardening ideas there are pretty full of holes once you start to really think about them.
