My best guess would be the listing was written by someone whose first language (and possibly even second language) is not English. However, it's not so much the way it's written, but what it says that I'd be concerned about. I don't like: 'We can't arrange for collection' - it's an amp, and will cost a fair bit to post; I like 'We may not answer your email' even less. It's cheap, but best left alone I'd say.
Plus it's a Valvestate PDT_047
