$399 at Costco, that's a smoking hot deal for what you get. Includes roller guides, nice quality swivel casters (2 of them lock), drawer liners for all drawers plus you get extra solid wood bench top space.
Looks like a decent deal on that drill chuck.
I got the same hole gauge set as the one you got from Enco. I found it a bit sticky to use. I ended up disassembling, cleaning, and de-burring them. It is a bit fussy and the ends are spring loaded. I did it in the cover of a cardboard shoe box to avoid losing pieces. I also hand twisted an appropriate size drill through the handle and the "T" end and lightly oiled all the internal parts.
They work much better now.