For where to sell there's a well used classifieds section here. Just make sure you follow all the rules or your ad will go bye bye.
Unfortunately without knowing the make model or condition of anything giving an accurate appraisal is nigh on impossible and will put off the vast majority of buyers. Anyone not put off will assume they're cheaper models and more fucked than bonnie blue so offers will reflect this, afterall they're the one taking all the risk
Bundles don't tend to sell quickly either. You'd do better selling stuff individually