RE: Tower discount codes
Tower Hobbies discount codes change monthly. An indication of what they are, they are in the catalogue for the year ahead and the next month is e-mailed.
I find out how much I am going to spend and then look at the catalogue. That tells me which month I will get the biggest saving. For instance, if I make a big order this month I will save $10. The same order next month and I will save $15.
There are also other offers that appear frequently. I don't think the codes are secret. They are enticing you to buy from them with the offer of a discount. They are not being generous, they want your money!
This is meant as no offence to Tower as I have had great service from them and they are cheap, but at the end of the day they are a business.