Gambling GSA SER

Hi everyone! For the past week I've been using GSA SER for tier 1 and tier 2 links (mostly tier 2). Basically I am in love with this tool because the results have been greater than expected.
Since I am pretty new to GSA SER, I have couple of questions in hope that some GSA masters in this forum could answer them.
My plan is to get more relevant and niche related backlinks to use as tier 1 backlinks. Since I am in gambling niche, I was wondering if there is such a thing as gambling link lists for gsa and if yes then how pricey they are. If the answer is no, then I would like to know if there is a such a thing as niche related link lists for GSA

Thanks

Yes, I'm also looking for same.