How can I grow a database of B2B buyers for a concept like liquidation.com in an underdeveloped market?

For pure B2B, nothing beats the free and fee offerings at http://www.marketingprofs.com/

Tip: Have you tried creating Facebook ads with "WooCommerce" (and variants) as Interests? Campaigns with specific interests and a few demographic filters are quite effective. Especially now that Facebook aggregates data from other online and offline sources. Good luck! Let me know if you have any more questions!

How to sell to retailers? As a former Retail Buyer from Target, here's my suggestion. You need to first ready your sales communication and materials to explain how 1) You will drive sales at their stores (best told through sales traction and history in comparable or slightly smaller retailers than the one you are targeting 2) Demonstrate how you will support sales with a marketing plan. Marketing mitigates sales risk and that's a retailer's #1 concern and 3) Prove you will deliver flawless vendor execution. There are many hiccups that happen along the supply chain and it takes an experienced company to flawlessly deliver inventory to the right stores/DC's in the right quantity on the right day. The best way to prove this is by showing that you are currently working with retailers of the same magnitude. So in short, you have to scale up slowly - from small retailers to larger retailers - in order to manage risk, build sales traction, build brand awareness, and manage cash flow. How to contact them and sell to them? Use Linked In to find retail buyers. I have a short video on how to do this: https://www.youtube.com/watch?v=ZwbfUMRHiq0 Trade shows are also effective; you can get the mailing address of retail buyers in attendance plus meet them face to face if they come to your booth. Also, network within your industry. You'll find your peers are wiling to trade buyer lists with you. But in short, don't bother reaching out to a retail buyer until you have talking points that address those 3 things I mentioned above all. I'm happy to do a clarity call if you have follow up questions.

Selling to enterprise customers is about demonstrating value while reducing risk. You will need to show irrefutable proof that your solution will address a pain - ideally, one that is both urgent and important (Eisenhower matrix/Covey). The best way is to point to tangible examples of where you have solved the problem before - through documented case studies, testimonials from industry luminaries, etc. Most enterprise solutions have been developed with the involvement of at least one customer to ensure there is some semblance of product/market fit. If that is your situation, you need to use that customer as a proof-point. In the absence of an existing customer, you need to find someone (a champion) who is willing to accept greater risk in return for the benefits of being an early adopter. The offer to them could be financial (free/reduced cost/pay when you're happy), exclusivity, customization/ personalization/integration,... - something that will provide extra reward for taking a chance with you, in return for allowing you to use them as proof when the value is proven. As well, expect that an enterprise will limit their risk by testing your solution in a controlled setting - in one department, a specific project, a parallel implementation with another product, etc. with very specific, measurable objectives and expected outcomes. Selling to enterprise customers can be daunting. Decision-making can be slow, complex and political. The reception area is full of existing account managers with big expense accounts and six figure salaries who call on the customer every day. But, if you can find a way to successfully break into the market, large companies can be like lemmings - and one sale can lead to many. Good luck! Ping me if you think I can be of help.

Find apps that are B2B and go to the review sections. Specifically going to Google's play or Chrome store and look at reviews and follow them to Google+ to engage. I took that same angle for B2C app I was building last year. Check it out. http://blendah.com/post/37331434653/lean-startup-hack