Mentioned this in a thread a few weeks ago, but... yep!
Purchased my Amphibia from eBay seller mari-vlg for $45 plus $13 shipping.
Replaced the bezel/insert with one from German eBay seller am-diver for $49 - needed to buy a new bezel spring as I managed to ruin the original one during my first attempt at swapping.
I got five replacement bezel springs for $7.50 from eBay seller Zavar011 (Israel)
It arrived on the crappy stock bracelet which I replaced with a 22mm brushed Engineer from Strapcode I had on hand. They sell new for $63.
Generally I like the watch as a daily "beater", especially at the lake where its exposed to water when sailing and kayaking. Its been submerged down to around ten feet (snorkeling) with no detectable moisture inside.
It started out running about +30 seconds a day and is now up to 40+ with an amplitude of 350 and no beat error on the timegrapher. A cheap fun watch. Don't buy it for the dial lume though - its meh.