It does rather seem that way. This is the most economical option I've seen online thus far: http://www.amazon.ca/dp/B00FKVYCHQ/

Edit: it looks like beauty supply wholesalers are a better option. If you're in an urban centre, a local wholesaler would be ideal. http://www.discountbeautycenter.com/43152-advantage-40-volume-creme-developer-16-oz