Best prices. The poster is asking for best prices, and you, like the good new wind-up instructor you now are, can be seen carrying forward the irrational, unfounded fear mongering of the tired dive shop party line: "buy it here or you will die..." (paraphrased for the simple)
There are price alternatives. Especially for reliable non-life support hear (last I checked, computers aren't life support.) I grant you this, you will likely be on the edge of your comfort zone if you buy a dive computer from eBay. I'm confident you'd be more comfortable buying a snorkel or gloves (prior to registering them) from eBay. But for those of us who aren't ignorant of eBay, we've assessed the risks and we go there.
Or we go to LeisurePro.
When you've moved past plastic fins, your first mask and over-priced snorkel from OW class, and are ready to buy the gear you're going to keep, it is all about price.
Stated again: Once you've cut the dive shop cord, its all about price.
And price is value when you're dealing with quality gear. Especially if your really diving it. My price per dive on my Suunto is now in the pennies range. Gotta love that. THAT is value.
Suunto (probably a 6 Sigma or ISO shop) probably has a failure rate in the very, very low single digits. Fine odds to save $350 per unit. I'll take those odds every time. And so do millions of us. Every day.
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Ken