Andy,
I use Laytex gloves for bits and bobs, armed robbery, breaking and entering but i get them from work so I wouldn't have a clue how much they cost.
As for spare parts I always use genuine Lexus bits just because I have had bad experience in the past with Halfords own stuff etc. If you were planning on installing a Fram oil filter or Ferodo brake pads etc. I would say that would be fine, but I have found using LOC Gold discount parts cost the same from Lexus anyway.
Basically in my opinion cheap parts are cheap for a reason, when it comes to things like brakes is it worth the risk?
Just my thoughts of course...