I found out recently that due to a glitch on harbor freights inside track website, all of their monthly inside track deals can be stacked with a 20% coupon online. If you login and navigate to the inside track website, you will find the monthly deals marked down on the website. Add the item to your cart and apply a online 20% coupon, and it will drop the price another 20%.
I just did this over the weekend with their 7x10 lathe, getting it for $320. It shipped out today
I was half expecting them to cancel my order. Last week when I stumbled across this I printed out my shopping cart and headed over to my local harbor freight store. They would not match my shopping cart, as the final price was below their cost. I didn't argue, I still bought something since I was there too.