I'm not familiar with the exchange rate or your local market, but I'd pay about $275 for that around here. The cassette and chain are dirty (possibly 'done') and there are some rusty bolts. Kool stop pads would help with braking.
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"The older you do get, the more rules they're gonna try to get you to follow. You just gotta keep livin', man, L-I-V-I-N." - Wooderson
'14 carbon Synapse - '12 CAAD 10 5 - '99 Gary Fisher Big Sur