By Kirk Miller Sonos doesn’t throw a ton of sales, so the best chance to get a discount on this premium (but not overly pricey) home audio gear is to wait for their refurbished gear to come back in stock. The good news? You’ll save money. The bad? This stuff goes quickly. Don’t let “refurbished” turn you off. We’ve gone over the companies that do refurbished right before. The better tech companies can rehab used (and that’s usually gently used) devices to be as good as new, and you get the bonus of a discount and safety net of a good warranty. Given that we love Sonos speakers — nice form, gre…