Question

I cannot spot my error what have I done incorrect?

You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use
near ‘NUMBER(4,2), description text, PRIMARY KEY (id) ‘ at line 9

CREATE TABLE IF NOT EXISTS `{$this->db_pre}sales` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `slug` varchar(60) NOT NULL,
    `location` varchar(250) NOT NULL,
    `bedrooms` int(3) NOT NULL,
    `bathrooms`int(3) NOT NULL,
    `property_type` varchar(150) NOT NULL,
    `floor_area` varchar(50) NOT NULL,
    `price` NUMBER(4,2),
    `description` text,
    PRIMARY KEY (`id`)
  ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

Answer 1

The NUMBER type is not a part of the MySQL spec.

You should use DECIMAL (or NUMERIC — they are identical) instead.

The DECIMAL and NUMERIC types store exact numeric data values. These types are used when it is important to preserve exact precision, for example with monetary data. In MySQL, NUMERIC is implemented as DECIMAL … (my emphasis)