pfSense doubles the price over the exact same box you can get from AliExpress or ebay.
Buy a standard Ryzen mobo, a low-end recent Ryzen CPU, undervolt it, toss some ram in, an old SATA SSD, and a dual or quad port PCIe adapter off ebay. Or just buy an old Dell SFF PC; you can get your choice of how powerful a processor you want.
If you want the embedded/fanless setup, then buy one of the aliexpress/ebay boxes. Qotom is one such seller, I believe.
As someone with a ton of experience with opnsense: their release style is extremely irritating. The only way to get security updates is to conduct a full upgrade of the system. The UI is clunky, outdated, full of useless "help text", and almost seems to be purposefully designed to use confusing field names and terminology. Debugging problems is difficult at best with inconsistent logging infrastructure.
I've also never once had a config restore go properly, something I've tried to do several times because I generally get about 2-3 years out of an opnsense install before enough stuff has broken that I need to reinstall from scratch.
Last but not least: they now routinely ignore their support forum except for the most simple, common problems. Every time I've had a problem, I've found a corresponding post in their forum which has gone gnored by their employees.