Quick Ebay Store Question

[mrbills10]

I have a basic store subscription...everything is going well thanks to all the advise on the boards...

Anyhow...

I get the 150 free listings...but i am listing around 350 a month...just doing it as a part time thing right now..I like the discount in final fees and i am a powerseller....but i am at that point about taking the next step and going up a level to get the extra free listings which they say totals 500 free listings...

Does anybody know...when you increase the store size in the middle of the month...do they prorate the fee and do they give you the extra 350 extra free listings right away??

thanks in advance for the help..

Steve