You can create as many as subscription packages with job post and duration limit.
You can create one time or recurring subscription packages.
Yes, you can download your resume if you are a candidate. After login you will have that option "Download Resume", a pdf file of your resume will be downloaded.
Employers can also download resume when you apply to a job.
There's a lots of payment gateways like: Authorize Net, PayPal, Payza, Skrill and Stripe.
You can make it with anyone of these.
No, it is absolutely free to create resume and apply to job here.
Yes, there is a trial subscription package, you can start with this.