Yep. I joined when you had no downloads limit for a quite low fee. Then they changed to the plans system with limited downloads, so I canceled my subscription, but a couple of years later, I decided to join again. They billed me USD9.99 for 40 tracks/month until they started the European branch, then the fee changed to 9.22 euros (dollar wasn't as weak at that time). That's been my fee for a few years, they've tried to convince me to change to other plans, but all them are way more expensive, so I've been enduring.
I suppose they're considering my initial joining date, when the deal was so irresistible, to calculate my status.