The low cost of $69 for a perpetual license is far outweighed by the security and peace of mind it provides. Invest in your craft, support the developers who make the tools you rely on, and unlock the true potential of your computer keyboard as a professional audio instrument. The only "hot" key you should be concerned with is the one you've intentionally mapped to your next perfect cue, safely and securely within a fully licensed, fully updated version of Soundplant.
If the official pricing does not fit your budget, look for free, open-source audio triggering tools that offer similar capabilities without security risks.