Price for cheap but good tech DD for a European SaaS company with ~2.5M ARR?

Hi Searchfunders, We are pre-fundraising/self-funded. How much would a high-value — i.e. cheap but good quality — tech DD provider charge for a European SaaS company in the 2.5M ARR range? If we are very price sensitive (and ideally delayed payment terms), probably an individual contractor makes more sense than an agency, right? Let's please primarily talk prices first, but if you have recommendations you can also send those along with the price estimate. ;-) THANKS!