intermittent 'transaction underpriced` issues when submitting 'receive' events

[owocki]

MetaMask - injected web3
inpage.js:90 MetaMask: web3 will be deprecated in the near future in favor of the ethereumProvider 
https://github.com/MetaMask/faq/blob/master/detecting_metamask.md#web3-deprecation
get @ inpage.js:90
factory @ hooked-web3-provider.js:202
(anonymous) @ hooked-web3-provider.js:210
inpage.js:34 MetaMask - overrode web3.setProvider
inpage.js:36 MetaMask - injected web3
receive.js:84 Error: transaction underpriced
    at Object.InvalidResponse (inpage.js:8228)
    at inpage.js:8228
    at inpage.js:209
    at inpage.js:8205