Travertine Sealer?

I was doing some research and have narrowed it down to the Akemi Stain Repellant Nano or the Stone Surface Technologies SB (STT SB), and ended up with the STT SB because many posters here and at JB said it had no odor. Now I go to find some to buy and can't find it anywhere. Has anyone used this product that can direct me where to buy?

Also, have you liked it over time? I saw that rococogurl likes the Akemi, so I could go with that since it's readily available, but I'll be applying it indoors in the future and was hoping to have a better smelling option.

Thanks!