Mallet is just as bad as the rest of them, tbh. Inaccurate, only thing the dude has going for him is size and arm, didn't love him coming out and still don't think there's anything special about him. I assume the guy to make money among the bunch is going to be Sanchez, and even he's a poor option. It's depressing, but the Rams have said they're gonna bring someone in to compete with Bradford so even if it's a farce I presume they're going to end up signing one of these guys.
The other option seems unrealistic to me (trading for QB), due to the Rams not having a lot of picks in this draft and needing to reload a couple OL at a minimum. QBs are the premium position, so with some of those guys who may be available like Foles or Glennon you are going to have teams competing for them pushing the price up. We can talk on the board about shaking one of them loose for cheap but it is doubtful we get them for what they should be worth in trade. If the Rams like one of them that much they will need to prepare to overpay a little at least for them.
This is why I also mentioned the young/unproven types in previous posts. QBs drafted in the last couple years that have not yet failed or had the option to fail would be the most affordable. And it's also why it's so important to take a developmental QB this season, get one of these guys who have the tools and give him a clipboard.