Did you know that collagen and gelatin are the same thing? It's called collagen inside the body and forms connective tissue i.e. skin, tendons, ligaments etc. It's called gelatin when skeletal tissue and other animal waste is rendered down as a by product of meat production. (Vegans and vegetarians take note! This is where collagen comes from whether you swallow it or apply it externally!) A rose by any other name...
Whatever the beauty industry tells us, (and they try hard to convince us), both substances are broken down to exactly the same amino acids in the digestive system and used to repair and build new proteins.
The offer of collagen powder on GN today normally retails at £6.25 per 100g (40% off your first order fetches it down to £2.50/100g. The offer is a 400g tub for £24.99)
Amazon sells a gelatin powder for approx £1.60 per 100g. Some is even cheaper.
paleoleap.com/all-about-gelatin-and-collagen Read right to the end of this one. It's not long winded and won't blind you with science! If it doesn't work as a link, just copy and paste or type it in.