purple33 they usually send me the subtitles file in ASS format but you can also ask them SRT. In any case the format is not a problem as there are websites that make the conversion of formats for free and in seconds.
Their subs are very good but the prices are steep if the video is long - subtitling is a labor-intensive job. I have ordered many subtitles from them in the past, either on my own or within crowdfunding projects.
The main hurdle in crowdfunding projects is that Erojapanese usually asks you to pay in the beginning 50% of the total price, although they may waive this requirement for trusted clients, and they have done it for me. In any case you will have to pay in the end any remaining amount that was not covered by the various contributions.
I asked them recently a quotation for STAR-871, which imo is Yume Takeda’s best video. The price was 247 usd - it is a 205 mins. video. I didn’t order it but would do it if there were a few contributors.