Yes the Syssa is available and I owned one when they first came out. A very nice engine but overall I was disappointed with the whole purchase and ownership experience. I sold it and went with the DLE 30, one of the many Chinese engines available. Overall the DLE 30 has been a much better engine. I know ..... Chinese but what can a guy do when the American engine and company doesn't perform to expectations.
You may want to read through the huge Syssa thread here on RCU and form your own opinion of the company.
SYSSA 30CC GAS MADE IN USA
How about stepping up to the DA35 which just came available a couple of months back. American quality from a company with a sparkling reputation. Expensive but I bet it will be a rewarding experience. Price very close to the Syssa.