It's a tough call in my mind. With some of the Internet vendors you have minimums (>$25), plus sizable S&H on top of that. So, to get several varieties of plants for $15 is not a terrible deal. Then again, if I had asked you for $15, I certainly would have included quite a bit more. Then again, with my time at a premium these days, the last few times I shipped off plants to fellow hobbiests, I really wondered if it was worth my time (which clearly on a $/hr basis it never has been...but for the 'goodwill' effect...).
46g bf, XP3 w/ vertical spray bar, CO2 w/ SMS122 & diffuser,100% Flourite, 96w+55w cf AHS, AGA Member