My question was really all about preserving my investment. Out of curiosity mostly, I go dumpster diving on eBay from time to time, and look at the going rate for Festool equipment I already own. The value of the ATF 55 became a question because the one I bought new was second-hand. I never knew the full retail price. Mine was unused but second owner. The guy traded it in because the new TS 55 was released shortly after his purchase. I paid $250 for the complete package, which included the Systainer and a 55" Guiderail.
On about Thursday, a beat-up ATF55 sold on eBay for $186.50. It came with no guiderail. When I didn't get an answer here on this forum, I sent an email to my Festool dealer. Who knows everything. He told me the new selling price for the package in 2005 was $410. That tells me that the ATF 55 remains prime real estate. Good news to hear.
Gary Curtis