$165 for a 4-channel energy measurement system plus a whatever 2.4GHz wireless module? No, thanks. I can build one for $50.
Also, regarding to the certificate cost, a UL60950-1 test+cert can cost you $3000 easily if you get it done correctly in one pass.
An FCC cert for intentional radiator (if they decided to roll out their own WiFi design) will also run you easily $10k.
And that's only for US/Canada. National level certificates for each major regulatory body cost roughly the same, so multiply that by 5 you get the number: $65k.
Even though some regulatory bodies recon each others' certificates, $59k, in AUD, still seems far less than required if they want to sell world wide.