The PSP Java utility classes are FREE. We do not expect payment, but obviously will gratefully receive any payment you care to make on a 'pay only if satisfied' basis. We mostly receive payments from larger corporate users. All users get the same quality of software and support whether they pay or not.

Payment on invoice

If you would like to make a payment on a hard-copy invoice, we can easily send you one if you are in the United Kingdom. If you are in another country, then we may need to discuss invoicing a bit further with you. Please contact us via email to discuss payment via invoice. We suggest a payment around UK£100 (approx. US$160).