Hello.
I can help you with this. I hope you understand that quality of work depends from time that was spent on it. In meta analysis this often related to the quality and quantity of papers that was found. If this is something like thesis, may be we have to start from beginning, I mean data analysis and collection. If you want really good work with this budget you have to work yourself, and I expect that this budget is a budget of consultancy. If you need quick work in few days by me, this will be low quality work because during this time I can collect around 30 papers only (without in-deep analysis of papers) about topic with reading and writing to reach a work count (budget is same). I see that you are talking about database. It is interesting to see how well database is in terms of work with it.