How to get Mammalian expression with reasonable price?

Question

Mammalian expression systems are the ideal choice to produce eukaryotic proteins as they are able to introduce proper protein folding, post-translational modifications, and product assembly. Although the yeast, insect and other eukaryotic cell also has the modification of glycosylation, the way of glycosylation is different from that of the human and the other mammalian cell does.