"Our model when you sell phones is that we keep a slim margin, we don't make money on the phone but we don't lose money on the phone," Pei told CNBC in a phone interview.
On October 27, OnePlus is opening a one-hour window for customers to buy its model, in an attempt to broaden the appeal. The company offers a 16 gigabyte version at $299 or a 64 gigabyte model for $349.
"We started this because we didn't know what demand would be so we have taken some units aside as a buffer for this event," Pei said.
But analysts aren't convinced the company's strategy will work. Ian Fogg, head of mobile at IHS, said the tactic of going straight to consumers in a world where many people buy their smartphones through carriers will be difficult to pull off well.
"The model of going direct to the consumer is a difficult one to execute in a market where the operators are the channel through which most consumers buy phones," Fogg told CNBC by phone.
Fogg also added that networks only have a certain number of brands they sell and it is "unlikely" it will flog an "unknown brand".
Pei said that the company is not aiming to turn a profit with its smartphones but instead said it is eyeing software to drive revenues. While the company is not currently working on software, its aim is to build a large base of users to sell to.
"We see that hardware is increasingly becoming (a) distribution vehicle for software so in the future that will be the key place for us to drive business and make money," Pei said.
OnePlus is also entering a fiercely competitive space – the mid-priced smartphone sector. Brands such as Motorola, Sony and LG already operate in the area and making inroads will be tough for OnePlus, analysts said. This could raise concerns about its long-term viability.
"It is getting more crowded so tougher to sell and there may end up being a race to the bottom on pricing," Neil Mawston, mobile analyst at Strategy Analytics, told CNBC by phone.
"There is going to be a scramble to get the best features at the lowest prices meaning profit in the longer term will be hard to come by. There is a question about whether OnePlus One is sustainable."