Well, they are easily the noisiest bit of kit I own... yep, not offensive.. a nice soothing 8 bit noise, but you sure can hear it when it's switched on and nothing else is playing.
Also, regarding the price, when I check the mouser link it shows me $62.. not $46, unless you get different price breaks in the US etc.
I find Mouser is rather expensive her in Australia, sure, convenient and a vast catalogue, but expensive.
regards
Mike