I just received four of these plants from this eBay Seller, last Saturday. Although she has only one left on this auction, I believe she has more. So, if you want more, instead of paying right away, send her a message that you would like to buy more. Shipping for one is 8.00$, additional is only $1.50 ea.
LEMON GUAVA - but how sweet it is! Live plant - eBay (item 260234875746 end time May-04-08 16:30:39 PDT)
The plants I got were 8-inches to 10-inches tall. Given proper care, fertilizer, warmth and humidity, they could fruit next year.