123contactform

I wasn’t sure which forum to write to. We run a small magazine/website and plan to run a contest requiring an upload and payment. I know Gravity forms is fabulous and reliable but to do all those things it is very expensive and we only need it for less than 1 month. And, did I mention we are tiny. I have found 123contactform. They are inexpensive and I have found they have all kinds of great WP plugins. I just can’t find any (what I think are real) people that have reviewed it. I don’t want to worry for the security of the paypal/CC transactions that will occur on my site. Can anyone here reassure me? Or tell me where to look for reassurance? Thank you