There are a lot of stores to buy diving equipment, but when to buy them is another story. Looking through the trend cycle of the amount of sales in the past 5 years for online stores, the best time to buy is generally on Black Friday and during the winter season.
In the last Black Friday I was able to buy a Suunto dive computer which was on sale along with other diving watches. The reason for such sales is most retail stores getting rid of too much inventory. You do have to watch out for this kinds of sale since some items have a no refund policy but international warranty is still available to most dive watches.
During the winter season I usually end up in the sporting goods section and blow the minds of my family for even thinking about diving when everyone is still into keeping themselves warm. It actually the best time to buy if your looking to get attention from any sales rep. Most of these sections are empty and they are really happy to entertain a customer interested in their products. I also go the same treatment when I was in Singapore when most of the diving stores and sporting good stores are empty.
Buying second hand diving equipment is another story when it comes to the right time to finding great deals. I usually see some unwanted gifts on sale after new years and a lot of equipment on sale during autumn. Most of the autumn sales I see are really just one time used equipment probably just bought for their holiday. I got some great deals on some underwater cameras during this season. The seller just told me he just bought it for his vacation to Thailand. Everything look so brand new, shutter meter was even bellow the 2000 mark which made it such a great deal.
The rules of finding great diving great deals for dive equipment changes a lot every year. A lot of my friend are starting to see a lot of fire sales from small stores. I don’t really encourage this since fire sales usually don’t give you the chance to return any equipment you buy, so don’t hesitate to some test before buying them.