I'm no expert, but that looks scary cheap for tuners.
I second that opinion. By comparison, the cheapest OEM sets on the Guitar Fetish site are still $12.95, and I'd be leery of those
. Good tuners are a good investment - they improve tuning stability, of course, and they can add mass to the headstock, which is supposed to add tone & sustain. That last may seem like less of an advantage if your guitar is already neck-heavy, I understand.
If there's a guitar repair shop near you, bring in your guitar, and talk with the folks in there, they may have just what you need, at a reasonable price. Ping tuners used to be considered a decent, if not great, set of tuners, and they show up around $17-20, online.