Hi all, I'm looking for a transmit capable SDR that is also low cost. I heard of the HackRF blue project, but that's stopped. On Alibaba I see a HackRF for $150USD but I'm not sure if it's legitimate. There's also the Yardstick one but it seems rather expensive given its features. Anyone know of other alternatives, even less common ones/ kits?

edit: What do you think about RfCat ($85) and Yardstick One ($100)? Anyone had experience with either?

edit2: Sorry, I didn't make it clear enough. I guess I'm not just looking for one specific band, but 433MHz is my primary concern. In addition, I want to be able to prototype/test without having to go through an Arduino or some other microcontroller. The SDRs also have the advantage of having many more modulation types.