Anyone else experiencing a sudden spike in sub sales at FT?  Is it just a part of their best match changes?  15 out of my last 20 sales were subs, whereas about the 30 previous to those were by far mostly PPD.

Normal for me.  DT was however very bad last month (80% subs).

Yes, the change has been hugely significant for me.

In terms of credits earned I peaked in February with an average sale price of 1.22 credits. Since then my sales have risen most months but credits earned have slowly reduced.

Last month (July) I actually had my best month for images sold but at an average sale price of 0.77 credits per sale. It appears to be getting steadily worse too __ so far this month I'm on an average sale price of just 0.63 credits per sale. That's a drop of nearly 50% in 5 months.

I've definitely seen an increase in sub sales at FT.  Also at DT.   

I am also getting a fair amount of daily sales through Fotolia's new XL sub model.

Seems like it is just following the inevitable course - as volume buyers look to save money more of them will be drawn to sub plans.