I picked this up for 40e. It's a fair price at the moment. I replaced the PSU caps with new ones I had in stock, the power switch and the power cable with items I had recovered (but were basically new). I love the sound of these mixers, I have the BX4 which can run on a 9v battery. They are favoured for their hard distortion when overdriven. 90s techno kicks.
Also I've been in need of a small mixer with a send and return. Boom. Now it's got another 40 years in the PSU. Maybe later I will try to get at the pots inside and clean them. They are ok for now.