Here’s a price comparison I did back in 2019 (presumably still correct?). But in short, per nt price was cheapest through ThermoFisher.
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Thus, we’ve been almost exclusively buying oligos from them, with $7,220 spent (as of June 2022) since our first orders starting December 2019.
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But, well, don’t order degenerate nucleotides oligos from them as they’ll likely be T biased.
If anyone sees anything better on campus, let me know!