Here is an updated list of affordable impact neutral and other select OA publishing options for chemistry
Impact neutral journals
\$1000 Results in Chemistry. Closed peer review
\$1195 PeerJ - Life and Environment. Open peer review. Bio-related. PeerJ also has a membership model, which may be cheaper than the APC.
$1990 Scientific Reports. Closed peer review
$0 CSS Chemistry Closed peer review
$0 Beilstein Journal of Organic Chemistry. Closed peer review.
$0 Beilstein Journal of Nanotechnology. Closed peer review.
\$0 ACS Central Science. Closed peer review. ($1000 for CC-BY)
€500 Chemistry2. Closed peer review.
£750 RSC Advances. Closed peer review.
Let me know if I have missed anything.

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