TDL did some good speakers. The RTL range were cheap (£250 for the 2s, £400 for the 3s), and sold well. They were good for the money, but a bit uncouth.
Looking at sold prices, £175 seems way too high, £100 closer to the mark.
I have seen their Studio range, like the Studio 1M, go cheaply. These detailed for £1k, and were much better. I’ve seen these go for little more than £100.