I had never had less than satisfactory experience with Upscale Audio. Recently I've got Technics SL-1210GME Limited "Master Edition" manual direct drive turntable from them - sent them my SoundSmith cartridge for install using DS Audio headshell they have recommended as an upgrade. There were some cartridge alighment geometry issues that were communicated to me with proper details and pictures. I believe they even contacted the cartridge manufacturer - finally everything has been resolved to my satisfaction. They followed up later to make sure everything is right.
Regarding 10% discount on assesories - I've used it a few times with no issues.

