I don't have a spare Rx to sell you. I have spares however. Just that I keep them for add on multi-models or as a back up.
Is this for an add-on model or a replacement due to damage?
I am sure you could get one from AMZ. They are not expensive at all.

Where I get mine from. And RadioLink Surface Rx's are very inexpensive as Rx's go.
Shipping a used one could possibly cost more than the price of a new one.
I would recommend a R7FG, if for
your Lim especially. I run that dually diversity antenna version in my Lim. Excellent range for speed running. And has
Telemetry along with a Gyro if that matters. Voltage Telem works great for serious speed running.
R6FG is cheaper, a few bucks less, and also has a Gyro FWIW. Very good range as well.

Both have 600meter range and same Latency performance.
https://www.amazon.com/Radiolink-Ch...hvlocphy=&hvtargid=pla-4583589121544321&psc=1
https://www.amazon.com/Radiolink-2-...hvlocphy=&hvtargid=pla-4584001431361413&psc=1
Which Radiolink wheel Radio are you running? The 6ch. or 4ch. version? Any of the above Rx's will work in either radio, FWIW.
Honestly, the version does not matter much at all. All are compatible with any version Radiolink Radio. And version 4 has been implimented with the latest R6FG.
Have you made sure you have the latest F/W update with your RL Radio???? Best to do that before you bind your next Rx to it.