Purchases can be made any day! And purchases don't have to be made weekly, just need to have an x to stay an active member to help keep the sales flow going within the team :)
Abby ~ http://www.etsy.com/shop/JDesignsHandmade ~ This is the shop that I purchased it from - she has some really cute ones and decently priced. I purchased it this morning and she had already emailed it to me by this afternoon!