If by "300" you mean a DSLR priced at around £300, whilst it may seem like a contradiction, the DSLR bodies at lower price points actually have a wider selection of lenses than at the top end.
The Canon ****D, ***D, **D (except the 10D) and 7D series can all use EF/EF-compatible lenses as well as the EF-S/EF-S-compatible lenses.
The Canon 5D and 1D/s/x series can only use EF/EF-compatible lenses.
I don't know where you're based but if you're not based in Europe, the Canon ****D and ***D series are also known as the Rebel and Kiss series.
DSLRs: Canon EOS 7D Mark II, Canon EOS 70D
CSC: Canon EOS M3
Lenses: Canon EF-S 15-85mm f/3.5-5.6 IS USM, EF 50mm f/1.8 II, EF 100-400mm f/4.5-5.6L IS USM, Canon EF-M 18-55mm f/3.5-5.6 IS STM, Canon EF-M 22mm f/2.0 STM