Marsh Quality

Before emptying the spam folder, I’m in the habit of reviewing the subject lines just to make sure nothing important was trapped by mistake. Of course, it is necessary to be a little skeptical since spammers will generally try to peddle their wares by making the product sound like it’s the best thing since sliced bread.
Today I spotted this subject line:

Trusted Marsh Quality at Discount Prices

I’m not sure I understand how “Marsh Quality” could be considered a positive. Sure, it’s Trusted Marsh Quality, but I tend to think of marshes as soggy, mosquito breeding-grounds.
They did get part of it right though. If the best thing about your product is its “Marsh Quality,” you’d better be selling it at a discount price!