If the flute was under a hundred dollars it was probably, a recorder and not a traverse flute. The two Aulos models, both copies of museum instruments made by 18th c. instrument makers, the Grenser and the Stanesby, cost around $450 and $550, respectively. The Grenser is a= 440Hz and the Stanesby is a=415Hz (period pitch). I don't know of a baroque traverse flute (playable) under $275. A note of caution: the flutes from cheaper sources haven't been revoiced (tuned by an expert instrument repairer) - ABSOLUTELY necessary for these flutes - or you'll regret it! You'll either have continual troubles fighting "wolf" notes or have to pay the $50 to $100 dollars to do the job later.
The least expensive flute the glossy Grenser is not longer being made by Aulos.

Mark Konkel-White, DMA