The remote Garmin GTX 345R can go into any airplane. For experimental, the GTX 45R is less expensive.
We have new transponders including the 35R, 45R, 345R, 345 (panel mount). We also have the 33ES and 330ES models for people who want to swap and we can repair them through the dealer network. There are other versions that can be ordered like the diversity models. Here is the 345R and Spruce (Jan 2025) shows a price of USD 5316. LancairTalk members through our dealer Cavalier Avionics can do better. We are quoting entire panels and individual LRUs so send us your wish list. We ship from Montana where no sales tax applies.