They CAN protect your eyes from reflections from shining surfaces, as this is the main purpose of these goggles (protect the eyes from a reflex, until you turn your head, or go out from the reflex, as any person do instinctively when got hit from a reflex, i mean) ..... they CANNOT protect your eyes if you intentionally point the laser in your eyes and stay there until the lens is melted (but i assume that this is not your intention, or at least so i hope
), or if you plan to use them for do optical alignment on high power units, keeping the face at the same level of the beam (for this specific work, there are face masks with special filtering windows, goggles are not enough)
So, basically, yes, they are enought for that what you want ..... just be sure to get the ones with the black plastic frame and the lenses that look dark orange / almost red, and not the light orange ones (there's someone that sell as "laser protection goggles" also safety goggles for grinders ..... these ones have the entire body, including the frame, made with light orange transparent plastic, and are
NOT a protection against lasers).
As far as i can see from the links that you have posted, the ones that focalprice sell, are the 16$ ones from laserland (you can see this from their pics, the cheapest ones left pass some green, where instead the more dark ones left pass only the infrared part)
About the infrared part, this is another reason for not point the laser at your eyes intentionally ..... the goggles cannot stop infrareds, but from the pointer, infrared is not focused at the same way than green (usually, when the green beam is focused to infinite, the infrared part diverge almost 3 degrees, at least in the modules that i have), so, it can be dangerous also with goggles, if you point the laser at your eyes from short distance, where instead, a reflection from some distance, send in your eyes too less infrareds for be dangerous.
