Hello Stuart,
Either you or we can go into the PayPal payment page and click the subscription ID, for example "S-XXXXXXXXXXXXX". Then just click "cancel subscription." Your subscription will continue to work through the end of its cycle. Also if you need to use it casually we are happy to add a few extra snipes for you.
Thank you for taking the time to write in. Please let us know if we can help further.
bidslammer