Cool @b_limo. If you live 150 or more miles from an ET dealer, you can buy the LFT-8b factory-directly with free shipping.
Regarding durability, the Linear Field Transducer (LFT) has been in production for over 30 years, unchanged! That midrange driver (two used in the LFT-8b) is built to a very high standard, far superior imo to those of Magnepan (no offense Maggies owners, of which I am one).
The ribbon tweeter is used only from 10kHz up, no need to worry about burning it up. The limiting element of the speaker is it's 8" sealed woofer (180Hz down), but that can be ameliorated with the use of a sub or four.
As for resale, you rarely see the LFT-8b for sale. It's a keeper! Sort of a modern day Quad ESL (lack of coloration, transparency), but able to play much louder. I'm not alone in considering the LFT-8b the current greatest value in loudspeakers.