There is a huge price drop on Vega Sport Protein today only (while supplies last). You can get a 45-serving tub for $39.89 with Subscribe-and-Save. This is gluten and dairy-free. This works out to about $0.89 per serving.
They also have Vega Clean Protein for as low as $34.90 and Vega One Protein on sale today only. Please note that prices may change.