Well if the 'all your lab needs met at the lowest prices' bit was true we would.
Sadly Sigma-Aldrich sell a box of pencils for about 20 quid last time I checked which gives you a ball-park figure for how expensive lab-stuff is. It's not like we're a mass market.
Having said that, you kind of can, but it depends on what it is. If it's a round bottomed flask, yeah don't worry. A double Schlenk-line will cost several thousands of $$ for a new one so that's when el glassblower comes in (though that would be a task met with some enthusiasm).
Even run of the mill glassware with universal (Quick-fit) ground glass joints is kind of pricey though - something like a tenner a piece.