He's explained before that this server was donated to him, he doesn't have huge site up keep costs like HF. He doesn't have donation pages either.
I think it would ruin the image of Support Forums to make it look like people are "paying for support" as this site is built on members helping other members without personal gain and I think it would ruin SF.
However, I would support a donation page for members to earn an award for donating to Support Forums.
EDIT:
Also all features are available to normal members. We can change usernames, use avatars, give reps so restricting these when creating a VIP group would ruin it all.
I think it would ruin the image of Support Forums to make it look like people are "paying for support" as this site is built on members helping other members without personal gain and I think it would ruin SF.
However, I would support a donation page for members to earn an award for donating to Support Forums.
EDIT:
Also all features are available to normal members. We can change usernames, use avatars, give reps so restricting these when creating a VIP group would ruin it all.