It depends entirely on the vendor
Impact of Collagen Peptide Supplementation in Combination with Long-Term Physical Training on Strength, Musculotendinous Remodeling, Functional Recovery, and Body Composition in Healthy Adults: A Systematic Review with Meta-analysis. Sports Medicine, 54, 26692690
Glutathione S -transferase P11 (GSTP11) inhibits c-Jun N-terminal kinase (JNK1) signaling through interaaction with the C terminus
doi:10.1371/journal.pone.0055407 Tian Y, Jiang W, Gao N, Zhang J, Chen W, Fan D, Zhou D, An J (2010) Inhibitory effects of glutathione on dengue virus production
The price of the starting dose of 0.8 mg is $149/month, the 2.5 mg dose is $199/month, the 5.5 mg and 9 mg dose is $299/month and the 14.5 mg and 17.2 mg doses is $349 per month, or $299 per month if you refill within 45 days