NEW YORK — Suzanne Somers’ solo show “The Blonde in the Thunderbird” will hit the proverbial brick wall this Saturday, when it closes after being trounced by the critics and having played only eight perfs and 10 previews.Even before the reviews came out, “Blonde” grossed only $71,173 for the week of July 11-17, bringing in a paltry $11 average ticket price. Alan Hamel, Somers’ husband and the show’s producer, put weekly running costs at $250,000. Hamel also told Daily Variety that “Blonde” was capitalized at $1.6 million and that he and the actress were the show’s sole investors. Before Broadway, “Blonde” played San Diego’s Spreckles Theater (January 2004). Counting that, Hamel estimated $4 million would be spent on the project before it shutters on Broadway.