I have for sale a fully built Eggtimer TRS. $70, plus shipping, Paypal Friends and Family. Only flown once or twice - works well.
This is the same price as a kit in the last year's Eggtimer holiday sale.
Not being the seller, I'd suspect it would have something to do with the physical size and configuration. I have one of mine in a forward ebay with the
antenna projecting up into the nosecone with the NC base removed, hence it's a long forward bay. Single break so the apogee charge blows the rocket apart and the main deploys with a cutter (Prairie Twister). This is in a 38mm MD rocket too. Flies high. It might be difficult to configure an ebay for some and it might not meet Daves requirements anymore. It's still impressive for what it does. Kurt