Chainsecurity

$127,000 To audit ~2,100 nSLOC for lido

~ $50,000 / week @ 2.5 weeks

From the following arbitrum research proposal:

Arbitrum Research & Development Collective: Elections & Applications

Dedaub

Our standard rate for manual auditing engagements is $3.5k per engineer per day.

2 auditors minimum → $35,000 per week

Open Zeppelin

$25,000 per engineer per week

Halborn

$20,833 per engineer per week