I started using Frog Lube when we first bought handguns 3-4 months ago. I'm sure most of the gun-specific cleaners/lubes do a fine job. Certain aspects of Frog Lube happened to appeal to me, the non-toxic nature being right at the top of the list.
Many threads mention the expense of Frog Lube and I don't doubt that it's more expensive than other lubes, but if you calculate the cost/round or cost/ month, etc., any treatment cost would be in the noise.
Once you do the initial treatment with Frog Lube the amount used per cleaning thereafter is minuscule: a few squirts down the barrel to loosen any residue, wipe down and a tiny dab of paste at each of the normal lube points. I might be spending a few dollars each time I clean our three handguns.