I have the TM04, I'm really pleased with it. Bought it on eBay from the same company and it came with washable covers.
(funny story.....it arrived minus the free covers, I emailed them to let them know, they were really nice, apologised and promised to send them immediately. 2 days later I arrived home to find my daughter had opened a parcel containing a 16 foot PVC greenhouse cover, she had opened it up and it covered everything in the sitting room.......they had sent it by mistake! It took the best part of an hour to fold it the right way to get it back in the box....they collected it and I finally got the right covers......should add, I live in a flat, daughter thought I had lost the plot!)
Kathie x